baber/WOPTO huggingface dataset:
Patent KR-20010033822-A (KR)
Title: 신규 에리트로마이신 유도체
IPC: A61K31/7042
Filed: 1998-12-21
Abstract: 본 발명은 신규 에리트로마이신 유도체, 특히 신규 C-13 R 13 치환체를 갖는 유도체, 및 그의 약학적으로 허용되는 염에 관한 것이다.  본 발명의 화합물은 인간을 포함한 포유동물에서 뿐 아니라, 어류 및 조류에서 항균제 및 항원충제로서, 및 다른 용도(예를 들면, 항암, 아테롬성 동맥경화증, 위 운동성 감소 등)로 유용하다.  본 발명은 또한 상기 화합물을 함유하는 약학 조성물 및 상기 화합물을 투여함으로써 세균 및 원충 감염을 치료하는 방법에 관한 것이다.  본 발명은 또한 상기 화합물의 제조 방법 및 상기 제조에 유용한 중간체에 관한 것이다.
Patent KR-20010024862-A (KR)
Title: 인터레이스 비디오 디스플레이 상에서 이미지 품질을향상시키기 위한 방법 및 장치
IPC: G09G5/00
Filed: 1999-01-14
Abstract: 본 발명은 인터레이스 이미지내의 플리커를 감소시키기 위한 방법과 장치를 제공한다(도 1).  이러한 방법과 장치는 감소될 필요가 있는 플리커가 있는 인터레이스 이미지의 영역을 식별하는 것(도 3)과 이미지의 특성에 기초한 영역내에서 인터레이스 이미지의 넌인터레이스 공간의 관계로부터 얻어낸 화소의 패턴을 적응적으로 조정하는 것(도 5)으로 이루어진다.  특정 이미지 특성에 기초하여 이미지내에서 끊임없이 변하는, 픽셀 융합(18) 특성들에 의한 적합한 기술을 이용하는 플리커 필터(10)가 제공된다.  플리커가 플리커 경향이 있는 이미지 텍스트위에서 감소되는 동안, 텍스트와 대부분의 그래픽들과 같은 자세한 이미지 내용에 대해 고수직 해상도가 유지된다는 것이 특징적이다.  필터(18)는 수많은 종래의 플리커 필터 기구들뿐만 아니라 여러 회사에 의해 실행된 심리 시각 연구들과 시뮬레이션에 기초한 것이다.
Patent KR-20010040876-A (KR)
Title: 굴곡파 작용에 의존하는 패널부재를 포함하는 음향장치
IPC: H04R7/04
Filed: 1999-02-09
Abstract: 패널 부재 특히, 바람직한 혹은 적어도 수용가능한 음향장치 성능을 위하여 상기 패널 부재의 영역에서 굴곡파 작용 및 관련된 음향 표면진동의 특별한 공진모드 분포를 갖는 패널 부재의 영역에서 굴곡파 작용에 의존하는 음향장치에 관계한다.  이 장치는 패널 부재의 상기 영역의 구성/기하, 패널 부재의 상기 영역의 굴곡강도 및 상기 패널 부재의 상기 영역의 굴곡파 트랜스듀서의 위치를 포함한 상기 분포에 영향을 미치는 패널 부재의 변수를 선택하는 것을 수반한다. 이 선택은 패널 부재의 동력 전달 관련 성질, 이에 따른 해당 음향장치 및 상기 음향장치의 성능을 달성하는 것에 상호관계된 기준을 분석평가하여 수행된다.
Patent KR-20010041031-A (KR)
Title: 기판처리장치와 그 방법 및 노광장치와 그 방법
IPC: G03F7/20
Filed: 1999-04-01
Abstract: 외부에서 수취한 기판 (R) 을 반송하는 기판반송수단 (16) 을 구비하고, 기판반송수단 (16) 으로 반송된 기판 (R) 을 사용하여 소정의 처리를 행한다.    기판반송수단 (16) 이 외부로부터의 기판 (R) 을 수취하는 수취부 (12, 13) 를 복수 개 가진다.
Patent KR-20010043053-A (KR)
Title: 1,3-이치환-4-옥소환식 요소의 제조 방법
IPC: A61P9/06
Filed: 1999-04-27
Abstract: 중간체의 단리없이 제조되는 것과 하기 단계들로 이루어진 것을 특징으로 하는, 하기 화학식의 1,3-이치환-4-옥소환식 요소 제조 방법이 기재되어 있다: 
     
       
     
     [식중, 
     R 1 , R 2 , 및 R 3 은 독립적으로, H, Cl, F, Br, NH 2 , NO 2 , COOH, CH 3 SO 2 NH, SO 3 H, OH, 알콕시, 알킬, 알콕시카르보닐, 히드록시알킬, 카르복시알킬 및 아실옥시로 이루어진 군으로부터 선택되고; R 4 는 치환 또는 비치환 알킬, 알케닐, 알키닐, 알킬아실 및 헤테로알킬로 이루어진 군으로부터 선택되고; A 는 치환 또는 비치환, 포화 또는 불포화, 직쇄 또는 측쇄 C 1-7 알킬 또는 알케닐 아미노기이거나; A 는 하나 이상의 질소를 함유하는 5, 6 또는 7원의 치환 또는 비치환, 포화 또는 불포화 헤테로고리이고, R 4 는 상기 질소에 부착된다]: 
     (Ia) 약염기 및 용매의 존재하에 1-치환-4-옥소환식 요소를 2 이상의 이탈기를 함유하는 탄소 사슬과 반응시켜 하나 이상의 이탈기를 함유하는 부가물을 형성하는 단계, (Ib) 부가물을 아민으로 축합시켜 1,3-이치환-4-옥소환식 요소를 형성하는 단계, 및 (II) 상기 1,3-이치환-4-옥소환식 요소를 회수하는 단계. 
     상기 방법은 1-[[[5-(4-클로로페닐)-2-푸라닐]메틸렌]아미노]-3-[4-(4-메틸-1-피페라지닐)부틸)-2,4-이미다졸리딘디온의 제조에 특히 바람직하다.
Patent KR-20010043596-A (KR)
IPC: A61K31/00
Filed: 1999-05-25
Abstract: A sleep-inducing preparation which comprises as an effective ingredient a prostaglandin derivative represented by the formula: <CHEM>  wherein X is a halogen atom, Y is a group represented by (CH2)m, a cis-vinylene group or a phenylene group, Z is an ethylene group, a trans-vinylene group, OCH2 or S(O)nCH2, R<1> is a C3-10 cycloalkyl group, a C3-10 cycloalkyl group substituted with C1-4 alkyl group(s), a C4-13 cycloalkylalkyl group, a C5-10 alkyl group, a C5-10 alkenyl group, a C5-10 alkynyl group or a bridged cyclic hydrocarbon group, R<2> is a hydrogen atom, a C1-10 alkyl group or a C3-10 cycloalkyl group, m is an integer of 1 to 3, and n is 0, 1 or 2, a pharmaceutically acceptable salt thereof or a hydrate thereof. <IMAGE>
Patent KR-20010043597-A (KR)
IPC: C25D3/38
Filed: 1999-05-14
Abstract: A process for the copper plating of substrates using insoluble anodes in acidic copper baths with separate replenishing of consumed copper ions, characterized in that the major portion of the copper ions is directly supplied in the form of copper carbonate and/or basic copper carbonate, dispensing with diaphragms and auxiliary electrolytes, in a separate tank operated in a bypass mode with respect to the working electrolyte, the released gaseous CO2 being separated off in said separate tank.
Patent KR-20010043823-A (KR)
Title: 열성형성 폴리프로필렌 발포 시이트
IPC: B60R13/02
Filed: 1999-04-30
Abstract: 본 발명은 하나 이상의 폴리프로필렌 중합체 및 하나 이상의 발포제를 포함하는 발포성 조성물을, 발포제를 0.2 내지 4.5 몰/㎏의 양으로 사용하며, 밀도가 16 ㎏/㎥ 내지 200 ㎏/㎥이고, 연속 기포 함량이 70 ％ 미만이며, 원주 길이가 1 m 이상이고, 발포체 두께가 2 ㎜ 내지 25 ㎜인 발포 튜브를 형성하기에 충분한 조건하에서, 조성물이 다이에서 방출되기 전에 발포되는 것을 방지하기에 충분한 압력, 온도, 및 압출 속도로 환형 압출 다이를 통해 압출시키고, (ii) 발포체를 폴리프로필렌의 융점 이하의 온도로 냉각시키고, 및 (iii) 반경을 따라 발포 튜브를 절단하여 발포 시이트를 형성시킴을 포함하여, 당해 시이트내의 중합체의 70 중량％ 이상이, 190 ℃에서 측정한 용융 강도가 25 내지 60 cN 범위인 폴리프로필렌인 중합체 발포 시이트를 제조하는 방법에 관한 것이다.
Patent KR-20010052485-A (KR)
Title: 가스버너용 조정장치
IPC: F23N3/08
Filed: 1999-05-27
Abstract: 가스버너용 조정장치는 버너용 가스/공기 혼합물을 공급하기 위해 사용된다. 가스압력과 연소공기압력 또는 가스흐름과 연소공기흐름 사이의 변동 전송량을 갖는 조정장치들은 이미 선행기술에서 공지되어 있다. 모든 종래의 조정장치들에서는 필요한 압력측정은 공기작용에 의해 수행된다. 개선된 조정장치는 전기 또는 전자신호(22)를 발생하고, 가스흐름을 인도하는 제 1라인과 연소공기흐름을 인도하는 제 2라인사이에 배치된 센서를 구비하고 있다. 또한 상기 조정장치는 보조신호(27)를 사용하여 센서(19)의 전기 또는 전자신호(22)를 계산하는 가산장치(26)에 적합하다. 가산장치(26)의 출력신호(30)로부터 발생된 조정신호(24)는 가스흐름을 변동하기 위해 사용된다.
Patent KR-20020060287-A (KR)
Title: A portable implement wash off the dirt
Inventor: PARK JONG DAE
IPC: A47K7/04
Filed: 2001-01-10
Abstract: PURPOSE: A portable dirt removal tool is provided to conveniently remove dirt from the skin of the human body without damaging the skin via the reciprocating movement of a dirt removal towel installed in a dirt removal plate. CONSTITUTION: A handle(2) and a strip fixing lever(3) are formed on the upper part of a body(1) of the portable dirt removal tool, and a battery(4), a motor, and a speed reducer(6) are contained in the body. A rotating plate(8) is coupled to a speed reducer shaft(7), and a crank rod(9) is installed at an eccentric position on the rotating plate to be connected with a shaft(11) coupled to a dirt removal plate(10). The shaft is shaped so as to be fitted and linearly reciprocated along a guide bore(12) formed in the body by the crank rod. A dirt removal towel(14) formed with an elastic strip(15) on the rim thereof is installed to surround the dirt removal plate, and a cushion layer(13) is formed on the surface of the dirt removal plate.
Patent KR-20020061707-A (KR)
Title: Apparatus for converting image data
Inventor: YOO GYEONG HO
IPC: H04N7/01
Filed: 2001-01-17
Abstract: PURPOSE: A device for converting video data is provided to convert video data used in a high resolution system into video data necessary for a low resolution system without using a frame rate converter or a large-size memory, thereby reducing a cost. CONSTITUTION: The third ADC(40) converts analog-type high resolution video data and an analog horizontal synchronous signal into digital data and a digital signal, and outputs the digital high resolution video data and the digital horizontal synchronous signal in response to an output enable signal. A signal generator(42) demultiplies the digital horizontal synchronous signal, and outputs the signal as the output enable signal by varying a duty cycle of the demultiplied result. A demultiplier(44) demultiplies the digital horizontal synchronous signal, and outputs a demultiplied result as an address enable signal. A storage(48) stores the digital high resolution video data in response to the output enable signal. An address generator(46) generates an address of the storage in response to the address enable signal.
Patent KR-20020063729-A (KR)
Title: Apparatus for detecting a fault in glass using a spreading panel
Inventor: KWON SUN WAN
IPC: G01B11/30
Filed: 2001-01-30
Abstract: PURPOSE: A glass defect detection apparatus is provided to pick up structural defects of glass in an easy manner, by radiating light having multiple phases to the glass through the use of diffusion plate. CONSTITUTION: A glass defect detection apparatus comprises a light source(10) for radiating light to a light transmissive object; a pickup unit(30) for picking up the light passed through the light transmissive object; and a diffusion plate(20) interposed between the light source and the light transmissive object, and which diffuses the light radiated from the light source and providing the diffused light to the light transmissive object. The diffusion plate is made of an acrylic material. Since the light radiate from the light source is diffused through the diffusion plate, the light has multiple phases, to thereby permit the pickup unit to pick up only the structural deflects of glass.
Patent KR-20010083171-A (KR)
Title: An optical system providing concurrent detection of a calibration signal and a test signal in an optical spectrum analyzer
Inventor: ANDERSON DUWAYNE R
IPC: G01J3/18
Filed: 2001-02-15
Abstract: PURPOSE: A optical system for simultaneous detecting calibration system and test signal in optical spectrum analyzer are provided to supply a concurrent calibration signal and detect a test signal in an optical spectrum analyzer that is useful in analyzing optical telecommunications transmission lines. CONSTITUTION: The optical system(10) has a collimating optic(12), an optical axis(14), and a focal plane(16). A fiber array(18) has first and second pairs of optical fibers(22,24) with each optical fiber pair having an input optical fiber(26,28) and an output optical fiber(30,32). The input optical fiber(26) of the first pair of fibers(22) is coupled to receive the optical signal under test(34). The output optical fiber(30) of the pair is coupled to test signal detector(36). The input optical fiber(28) of the second pair of fibers(24) is connected to an optical calibration source(38) that produces a spectral output in response to shifts in emission or absorption energy levels in atomic or molecular species. The output optic fiber(32) of the pair is coupled to a calibration source detector(40). An optical tuning element drive motor(44) is connected to the optical tuning element(42) to tune the optical system(10) through the spectral range.
Patent KR-20010085634-A (KR)
Inventor: MAITA MASAJI
IPC: A61B6/03
Filed: 2001-02-27
Abstract: PURPOSE: To provide a reliable diagnostic environment by reducing artifacts intruding into an x-ray tomographic image of a subject in case of scanning at the end part of a cradle. CONSTITUTION: The upper surface of the cradle is in the shape of a recessed curve in the front view, and the side as viewed in the carrying direction is cone-shaped. In the figure, points A, B are at the same position in the carrying direction on two sides where both side surfaces and the upper surface abut to each other, and a point C is at the center of the shortest curve connecting the points A and B. The cradle is cut in the plane passing the points A, C, a point F, which is for slanting the plane in the direction opposite to the carrying direction, and also a point G, which is for slanting the plane in the direction opposite to the carrying direction, and the shape of the cut plane is the shape of the end part of the cradle.
Patent KR-20020002190-A (KR)
Title: Rf receiver having signal-to-noise ratio and method of operation
Inventor: CLIBLUND YOSEP R
IPC: H04B1/709
Filed: 2001-02-27
Abstract: PURPOSE: A radio frequency receiver having an improved signal-to-noise ratio and its operation method are provided to improve a performance of a CDMA receiver and heighten a user's satisfaction by implementing a noise reduction circuit improving a signal-to-noise ratio of a reception signal consisting of a series of chip sequences. CONSTITUTION: An RF amplifier(205) amplifiers RF signals led-in by an antenna(201) to a user level. A down converter/demodulator(210) modulates(down-converts) the amplified RF signals into an in-phase and quadrature base band signals. Each I and Q base band signals includes mixture of noise signals and sequences of chip patterns corresponding to logics '0' and '1'. An ADC sampling unit(215) samples each of the I and Q base band signals and digitalizes them. The ADC sampling unit(215) stores the digital I and Q base band signals in a memory(220). A controller(225) controls the ADC sampling unit(215), a correlator(235) and a sampling position randomizing unit(230) and processes their outputs until they match to a single logic '1' or logic '0' Walsh code. The sampling position randomizing unit(230) shifts irregularly the samples of the logic '1' and logic '0' Walsh code for a previously compared signal and transmits its result to the correlator(235). The correlator(235) compares and correlates the samples of the single Walsh codes for the logic '1' and logic '0' and lead-in signals. A clock(240) provides desired timing signals to the elements.
Patent KR-20010088377-A (KR)
Title: System and method for managing a payment relation between the enterprises
Inventor: LIM DONG RYUN
IPC: G06Q40/00
Filed: 2001-03-05
Abstract: PURPOSE: A system and method for managing the payment between companies are provided to systematically implement on-line banking network for the payment procedure, to remove the complicated payment procedure and the danger of a loss and theft, and to maximize the competitiveness of the company through the simplicity of the payment procedure. CONSTITUTION: The payment management system(100) between companies belongs to the computing on-line network of a bank. A DB block(80) stores the information related with information DB for the authentication(81), collection specification(82), prepayment of credit card sales(83), operation(84), and registration(85). A DB management server(70) selectively stores or extracts each data through the relevant information DB, and effectively manages each data within the fastest time. A payment management server(10) systematically controls the DB management server and determines the storage and extract of the information through the management module for the authentication(30), collection specification(40), prepayment of credit card sales(50), operation information(60). An account management module(90) generally manages each account for the seller(91), system(92), and purchaser(93).
Patent KR-20020071227-A (KR)
Title: Process for preparing silk like clothes and socks and the apparatus thereof
Inventor: LEE MOON UN
IPC: D06M15/15
Filed: 2001-03-05
Abstract: PURPOSE: Provided are a silky finishing method and a device of clothes and socks which are characterized by having low production cost, having ventilating ability, moisturizing property, thermal insulating property and interrupting property of ultraviolet, not generating static electricity and not changing property of silk after washing. CONSTITUTION: The silky finishing method of the clothes and the socks is as follows: scouring a silkworm and a cocoon; removing sericin; abstracting a fibroin protein solution, or dissolving the fibroin protein solution at 25-80deg.C to make 5-10% of the solution; hanging the socks on a hanger, followed by moving to a treating chamber; dispersing, spraying and circulating the solution with an ultrasonic AC magnetic-field generator(8) to absorb, to infiltrate, to bond and to adhere the solution on the socks without a heating and pressurizing process; and pulling out the hanger of the socks from the treating chamber, followed by natural-drying.
Patent KR-20020071235-A (KR)
Title: Compositions and preparations of silymarin complex with the improved bioavailability
Inventor: CHOI DONG YEONG
IPC: A61K47/18
Filed: 2001-03-05
Abstract: PURPOSE: A novel composition prepared by adding a suitable amount of tromethamine and poloxamer 407 to poorly water soluble silymarin to increase water solubility and improve bioavailability is provided. Therefore, the composition is surprisingly improved in an elution rate and has an LD50 of 9,756mg/kg. CONSTITUTION: This silymarin formulation composition is obtained by mixing tromethamine and poloxamer 407 in a ratio of 1:1, solubilizing in 95% ethanol, and drying under reduced pressure at 40deg.C or less. In the process, 0.01 to 1.0% by weight sodium lauryl sulfate is also added instead of poloxamer 407. The silymarin formulation is a soft gelatin capsule.
Patent KR-20010088418-A (KR)
Title: Improvements to the preheating of metal strip, especially in galvanizing or annealing lines
Inventor: DELAUNAY DIDIER
IPC: C21D1/52
Filed: 2001-03-07
Abstract: PURPOSE: A new method and improved furnace are provided to remove oxides formed on the surface of metal strips by heating metal strips in a direct combustion preheating part that has limited oxidation for all manufacturing characteristics such as line speed, treatment and production characteristics and dimensions and cross-sections. CONSTITUTION: In a metal preheating method in which burners(4) are separately operated so as to set air/gas and accurately control environment of a furnace accordingly in the state that each of the burners are fixed regardless of manufacturing characteristics using a preheating zone(2) that is longitudinally divided into a plurality of zones of a unit length corresponding to one burner as a method for preheating metal in a direct combustion preheating part, particularly steel strips(1) so as to restrict oxidation of heated metal strips, the metal preheating method is characterized in that a specific numbers of burners are ignited starting from the lower end part of the preheating zone, a length of the furnace zone affected by ignition of the burners and a length of the regeneration zone, that is, a zone in which the burners are digested are changed by thermal demands, and each of the burners are operated under the state that total power and constant air/gas are set.
Patent KR-20010091940-A (KR)
Title: A semiconductor unit processing and check conductor
Inventor: KONO RYUJI
IPC: G01R1/073
Filed: 2001-03-09
Abstract: PURPOSE: To realize a semiconductor device with superb heat dissipating characteristics for mounting LSI chips on a circuit board without difference in thermal expansion coefficient by a means different from bonding or junction, with which exchanging of chips or the like is easy. CONSTITUTION: A plurality of electrode terminals 7 of a cantilever structure, a wiring layer 8 electrically connecting the electrode terminals, a wiring layer 12 for electric connection with the outside, and a coupling part 9 with a coupling groove formed in a cover 5 containing a plurality of LSI chips 1, 2 are provided. The board 6 and the cover 5 are coupled with the coupling part 9. The chips 1, 2 are electrically contacted by the electrode terminal 7, without using bonding or junction. The cover 6 and the board 5 are easily attached and detached to and from each other, and difference in the thermal expansion coefficient of the board 6 and the chips 1, 2 is small enough to do without reinforcing resin, and a cost can be redued. Positioning of the chips with the board 6 and mounting is easily made, and heat is easily dissipated from the chips 1, 2 by forming the cover 5 with silicon, and thus, heat dissipating characteristics of the semiconductor device is also improved.
Patent KR-20010044646-A (KR)
Inventor: CHOI GYEONG RYONG
IPC: H04N7/20
Filed: 2001-03-13
Abstract: PURPOSE: A circuit for supplying a power source of a set-top box is provided to receive a driving voltage simply without an additional switching operation by controlling and selecting a driving voltage in a power source supplying device by a control signal of a micro controller of a set-top box. CONSTITUTION: A driving voltage selection unit(300) is provided for selecting a driving voltage adapted to a satellite broadcasting by a control signal of a micro controller(201) of a set-top box at an output terminal of a transformer(T1) in a power source supplying device(200) of the set-top box. The elements of the driving voltage selection unit(300) are described as follows. A transistor(Q1) receives a control signal corresponded to the satellite broadcasting output from the micro controller(201) of the set-top box and is turned on/off. An electric field effects transistor(FET) receives and reversely operates a signal from the transistor(Q1) in accordance with the on/off driving through a resistor(R21), a condenser(C20) and a diode(D20). Two diodes(D19, D21) subtract or add an output voltage of the transformer(T1) in accordance with the reverse operation of the electric field effects transistor(FET).
Patent KR-20010092309-A (KR)
Title: Decoupling capacitors and methods for forming the same
Inventor: BRYANT ANDRES
IPC: H01L27/06
Filed: 2001-03-14
Abstract: PURPOSE: A decoupling capacitor and a method for fabricating the same are provided to improve a switching speed of a circuit including a decoupling capacitor by using a body region of high density. CONSTITUTION: A semiconductor region(102) is formed on a substrate(104). The semiconductor region(102) is separated from a bulk silicon region(110) of the substrate(104) by a lower insulating layer(106). A gate structure(112) is formed on a channel region(114) of a body region(116) of the semiconductor region(102). The first and the second diffusion regions(118,120) are formed within the semiconductor region(102). The gate structure(112) is formed by an epitaxial layer(122) formed on the channel region(114), a gate oxide(124) formed on the epitaxial layer(122), a polysilicon layer(126) formed on the gate oxide(124), and the first silicide contact(128) formed on the polysilicon layer(126). The second silicide contact(130) is formed on the first diffusion region(118). The second silicide contact(130) is separated from the gate structure(112) by the first spacer(132). The third silicide contact(134) is formed on the second diffusion region(120). The third silicide contact(134) is separated from the gate structure(112) by the second spacer(136).
Patent KR-20020073881-A (KR)
Title: Telephone having speaker and device of controlling speakers
Inventor: OH CHUNG SEOK
IPC: H04M1/03
Filed: 2001-03-16
Abstract: PURPOSE: A wireless telephone having a plurality of speakers and a speaker conversion control device is provided to stop the user of a high-volume speaker and operate a low-volume speaker when a user holds the wireless telephone near user's ear. CONSTITUTION: An approach sensing device(14) generates an electric signal in case that a user is approached. A CPU(28) connects to the approach sensing device(14), the low-volume speaker(24), and the high-volume speaker(22) for receiving the electric signal of the approach sensing device(14) and controls a low-volume speaker(24) or a high-volume speaker(22). The CPU(28) receives the electric signal generated in the approach sensing device(14) when the user is approached, and generates a speaker selection signal so that the operation of the high-volume speaker(22) is not performed.
Patent KR-20010092705-A (KR)
Title: Pattern formation material, pattern formation method, and manufacturing method of mask for exposure
Inventor: ITO MASAMITSU
IPC: G03F1/78
Filed: 2001-03-21
Abstract: PURPOSE: To provide a pattern forming material capable of producing a pattern forming mask in a high yield, pattern forming method and a method for producing a mask for exposure. CONSTITUTION: The pattern forming material for electron beam pattern formation contains an alkali-soluble resin and an acid generating agent which generates an acid when irradiated with electron beams and further contains dissolution inhibiting groups which have dissolution inhibiting ability to inhibit the dissolution of the alkali-soluble resin in an alkali solution and lose the dissolution inhibiting ability when the acid is applied. First dissolution inhibiting groups which enhance the sensitivity of the pattern forming material when allowed to stand in vacuum after irradiation with electron beams and second dissolution inhibiting groups which lower the sensitivity of the pattern forming material when allowed to stand in vacuum after irradiation with electron beams are contained as the dissolution inhibiting groups in such a ratio that the size of an alkali-soluble part made soluble in the alkali solution by irradiating the pattern forming material with electron beams is made substantially uniform independently of the time for which the material is allowed to stand in vacuum.